A clinical ankle prosthesis surgery navigator

Abstract

This invention provides a navigation device for clinical ankle joint prosthesis surgery, belonging to the field of medical devices. It includes a navigation device with a sliding rod slidably connected to its inner side. Kirschner screws are disposed at both ends of the navigation device, and the outer walls of the Kirschner screws are fixedly connected to fixing seats via bolt assemblies. An arc-shaped block is installed at the end of the sliding rod, and a rectangular frame is disposed above the arc-shaped block. A fixing block is fixedly connected to one end of the rectangular frame, and one of the Kirschner screws is fixedly connected to the inner side of the fixing block via bolt assemblies. The fixing block is positioned above one of the fixing seats. A rotating block is rotatably connected to the other end of the navigation device, and the rotating block is connected to another Kirschner screw via bolt assemblies. The rotating block is positioned above another fixing seat. This invention, through the cooperation of the fixing mechanism and other components, enables the navigation device to perform rapid calibration and reset, shortening surgical preparation time and improving overall surgical efficiency.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically, to a navigation device for clinical ankle joint prosthesis surgery. Background Technology

[0002] A navigation system is needed in ankle joint prosthesis surgery. Before using the navigation system, one of the Kirschner wires that fixes the navigation system is fixed to the patient's ankle, i.e., the distal end of the tibia, and the other extends along the tibia and is fixed to the proximal end of the tibia. Then, the calibrator is fixed to the navigation system. With the help of X-rays, the staff aligns the calibrator with the patient's bone line, so that the navigation system can be calibrated with the angle that needs to be removed from the patient's ankle joint. This allows the doctor to accurately locate the ankle joint during osteotomy. Then, multiple installations and removals are performed using various auxiliary devices.

[0003] After the navigator is calibrated, the existing procedure usually involves inserting Kirschner wires into the calibrated position, then fixing the auxiliary equipment to the Kirschner wires with bolts, and repeatedly installing and removing the auxiliary equipment to calibrate the cutting position. This process involves many steps and is quite troublesome to install and remove, which greatly reduces the efficiency of ankle surgery. Summary of the Invention

[0004] To address the problems in the prior art, the present invention aims to provide a clinical ankle joint prosthesis surgery navigator.

[0005] To address the issue that multiple installations and removals of auxiliary equipment are required after navigator calibration, significantly reducing the efficiency of ankle surgery, this invention employs the following technical solution:

[0006] A clinical ankle joint prosthesis surgery navigator includes: a navigator with a sliding rod slidably connected to its inner side; Kirschner screws at both ends of the navigator; a fixing seat fixed to the outer wall of each Kirschner screw via a bolt assembly; an arc-shaped block mounted at the end of the sliding rod; a rectangular frame positioned above the arc-shaped block; a fixing block fixedly connected to one end of the rectangular frame; one of the Kirschner screws fixedly connected to the inner side of the fixing block via a bolt assembly; the fixing block positioned above one of the fixing seats; a rotating block rotatably connected to the other end of the navigator; the rotating block connected to another Kirschner screw via a bolt assembly; and the rotating block positioned above the other fixing seat; a fixation mechanism located on one side of the navigator for fixing the angle between the navigator and the leg bone; and an adjustment unit located at the top of the navigator for aligning the ankle joint resection mold with the patient's ankle joint.

[0007] Optionally, the fixing mechanism includes a rotating rod rotatably connected to one side of the navigator, a calibrator fixedly connected to one side of the rotating rod, a second spur gear fixedly connected to the outer wall of the rotating rod, a second air chamber fixedly connected to one side of the navigator, a second piston rod slidably connected inside the second air chamber, and a second spur rack meshing with the second spur gear being fixedly connected to one end of the second piston rod through to the outside of the second air chamber.

[0008] Optionally, the fixing mechanism further includes a first air chamber fixedly connected to the top of the rectangular frame. The air inlet of the first air chamber and the air outlet of the second air chamber are connected by an air guide hose. A first piston rod is slidably connected inside the first air chamber. One end of the first piston rod extends through to the outside of the first air chamber and is fixedly connected to a first spur rack. A first spur gear meshes with one side of the first spur rack. A screw is fixedly connected to the bottom of the first spur gear. An auxiliary seat is fixedly connected to the top of the rectangular frame. The screw is rotatably connected to the inner side of the auxiliary seat. A cylindrical frame is threadedly connected to the outer wall of the screw. The cylindrical frame is slidably connected inside the rectangular frame.

[0009] Optionally, the fixing mechanism further includes a conical groove formed inside the arc-shaped block, a plurality of elastic plates are fixedly connected to the outer wall of the cylindrical frame, and the end of each elastic plate is in contact with the inside of the conical groove. The outer wall of the rotating rod is provided with a limiting component for limiting the rotating rod.

[0010] Optionally, the limiting component includes a fixed post fixedly connected to one side of the navigator, a ratchet tooth rotatably connected to the outer wall of the fixed post, a torsion spring installed between the fixed post and the ratchet tooth, and a ratchet wheel meshing with the ratchet tooth fixedly connected to the outer wall of the rotating rod.

[0011] Optionally, the adjustment unit includes a rectangular block fixedly connected to the top of the navigator. A U-shaped frame is provided on the top of the rectangular block, and rectangular plates are provided on both sides of the U-shaped frame. Two connecting seats are fixedly connected to one side of the rectangular plates. A worm gear is rotatably connected to the inner side of the connecting seats. A first lead screw is rotatably connected to the inside of the rectangular plates. One end of the first lead screw passes through the outside of the rectangular plates and is fixedly connected to a worm wheel that meshes with the worm gear. The other end of the first lead screw is rotatably connected to the side wall of the U-shaped frame. A fixing frame is threadedly connected to the outer wall of the first lead screw. The rectangular plates are fixedly connected to the U-shaped frame through a limiting rod, and the fixing frame is slidably connected to the outer wall of the limiting rod.

[0012] Optionally, the adjustment unit further includes a first calibration block and a second calibration block fixedly connected to the inner sides of the two fixed frames respectively. The inner sides of the first calibration block and the second calibration block are provided with a second connecting block and a first connecting block. The inner side of the first calibration block is fixedly connected with a plurality of connecting slides. The inner sides of the first calibration block and the second connecting block are respectively fixedly connected with a plurality of connecting slides. The inner sides of the second calibration block and the first connecting block are respectively provided with sliding grooves that match the connecting slides. The connecting slides are slidably connected to the second calibration block and the first connecting block through the sliding grooves.

[0013] Optionally, the adjustment unit further includes two sets of fixed sliders disposed on the top of the first calibration block and the second calibration block. Each set of fixed sliders has two sliders, one horizontally and the other vertically. One set of fixed sliders is slidably connected to the first calibration block and the second connecting block at both ends, and the other set of fixed sliders is slidably connected to the second calibration block and the first connecting block at both ends. Two rectangular sliders are fixedly connected to the bottom of each fixed slider. The first calibration block, the second connecting block, and the first connecting block are all provided with rectangular slots that match the rectangular sliders. The fixed sliders are slidably connected to the rectangular slots through the rectangular sliders, and an auxiliary spring is installed between the rectangular sliders and the rectangular slots. A drive component for moving the U-shaped frame is provided on one side of the outer wall of the navigator.

[0014] Optionally, the driving component includes a third spur gear disposed on one side of the navigator, one end of the rotating rod passing through to one side of the navigator and rotatably connected to the navigator, and the rotating rod being fixedly connected to the third spur gear. An auxiliary spur gear meshes with the top of the third spur gear, and the auxiliary spur gear is rotatably connected to the rectangular block via a rotating shaft. A third spur rack meshes with the top of the auxiliary spur gear, and trapezoidal slides are fixedly connected to both sides of the third spur rack. An auxiliary block is fixedly connected to one end of the trapezoidal slide. An auxiliary groove matching the auxiliary block is opened on one side of the rectangular block, and the trapezoidal slide is slidably connected to the auxiliary groove via the auxiliary block.

[0015] Optionally, the driving component further includes a movable block disposed inside the rectangular block. A trapezoidal slider is fixedly connected to the top of the movable block. A trapezoidal groove matching the trapezoidal slider is opened inside the rectangular block. The movable block is slidably connected to the trapezoidal groove through the trapezoidal slider. A second lead screw is rotatably connected inside the movable block. The two ends of the second lead screw pass through to the outside of the U-shaped frame and are threadedly connected to the U-shaped frame. A limiting block matching the trapezoidal slide is fixedly connected to the bottom of the U-shaped frame. The U-shaped frame is slidably connected to the trapezoidal slide through the limiting block.

[0016] Compared with the prior art, the technical solution provided by this invention has at least the following beneficial effects:

[0017] In the above solution, by setting up components such as conical grooves, the staff first fixes the mounting base to the Kirschner screws with bolts, then fixes both ends of the navigator to the Kirschner screws, and with the assistance of X-ray equipment, pulls the arc block by hand. The larger the angle of movement of the arc block, the greater the friction between the elastic plate and the conical groove, which makes the resistance when the arc block moves greater. This allows for precise adjustment of the swing angle of the navigator. Through friction control and component linkage, precise control of the navigator's position is achieved, thereby aligning the calibrator with the surgical position of the ankle joint and improving the efficiency of ankle joint surgery.

[0018] By configuring the ratchet components, when the ratchet teeth mesh with the ratchet under the action of the torsion spring, the rotating rod is limited, thus enabling the calibrator to self-lock and improving the stability of the calibrator when rotating. After the calibrator's angle is calibrated, the operator rotates the calibrator and places it on top of the navigator. As the calibrator rotates, the rotating rod drives the second spur gear to rotate, which in turn drives the second spur rack to move the second piston rod inside the second air chamber. At this time, the second air chamber pushes air from its outlet into the air hose, and then from the air hose into the first air chamber, pushing the first piston rod inside the first air chamber. The movement of the part drives the first spur rack to rotate the first spur gear, which in turn drives the screw to rotate on the auxiliary seat. This drives the cylindrical frame to move towards the bottom of the conical groove, tightening the bottom of the cylindrical frame with the conical groove. The friction generated between the cylindrical frame and the bottom of the conical groove fixes the navigator, preventing changes in the navigator's angle during surgery and thus improving its stability. When the navigator needs to be recalibrated, simply rotate the ratchet to separate it from the ratchet wheel, and then rotate the calibrator to reset it. This structure allows for quick calibration and reset of the navigator, shortening surgical preparation time and improving overall surgical efficiency.

[0019] By coordinating components such as the first calibration block, the operator rotates the worm gear according to the size of the patient's ankle joint. The worm gear drives the worm wheel to rotate, which in turn drives the first lead screw to rotate, thus moving the fixing frame outward. The fixing frame causes the connecting slide rails on the first and second calibration blocks to slide within the sliding grooves of the second and first calibration blocks, increasing the distance between them to match the length of the ankle resection. This ensures the size of the first and second calibration blocks matches the size of the resection location. Based on a 3D printed model of the patient's ankle joint, the surgeon can adjust the spacing between the first and second calibration blocks to ensure it matches the actual resection requirements. Then, when the first and second calibration blocks reach their designated positions, the operator rotates the second lead screw to drive the U-shaped frame to slide on the trapezoidal slide rail, matching the positions of the first and second calibration blocks to the resection location of the patient's ankle joint. By adjusting the first and second calibration blocks, the surgeon can more quickly find the accurate resection location during surgery, improving the accuracy of the ankle joint resection and accelerating the surgical process.

[0020] By coordinating components such as the first connecting block, when the cutting blade moves to the side of the fixed slider, it can be pushed further. At this time, the cutting blade pushes one of the fixed sliders to move inside the rectangular groove. When the fixed slider moves to its maximum limit, the cutting blade stops moving. Then, the operator lifts the cutting blade, and the fixed slider returns to its original position under the action of the auxiliary spring. The operator then moves the cutting blade along the cutting area from when it was lifted to continue cutting the patient's ankle joint. This process is repeated when the cutting blade encounters the next fixed slider until the patient's ankle joint is cut. This operation allows the operator to make real-time adjustments according to the actual condition of the patient's ankle joint during the operation, ensuring the accuracy of the cutting length and position. After the ankle joint cutting surgery is completed, the bolt assembly that holds the navigator on the Kirschner wire is loosened, and then the navigator is removed to continue the subsequent finishing work. The operator can quickly adjust and fix the navigator, calibrator, and cutting device to the required position, thereby speeding up the surgical process. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 For the present invention Figure 1 Enlarged view at point B in the middle;

[0025] Figure 4 This is a schematic diagram of the internal structure of the rotating block of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection structure between the navigator and the rectangular frame of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the cylindrical frame of the present invention;

[0028] Figure 7 This is a schematic diagram of the outer wall structure of the rotating rod of the present invention;

[0029] Figure 8 This is a schematic diagram of the limiting component structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the internal structure of the rectangular block of the present invention;

[0031] Figure 10 This is a schematic diagram of one side of the rectangular block structure of the present invention;

[0032] Figure 11 This is a schematic diagram of the structure between the fixing frames of the present invention;

[0033] Figure 12 For the present invention Figure 11 Enlarged view of point C.

[0034] [Figure Labels]

[0035] 1. Navigator; 2. Kirschner nail; 3. Rotating rod; 4. Calibrator; 5. Rectangular slider; 6. Rotating block; 7. Auxiliary spring; 8. Fixing seat; 9. Rectangular frame; 10. First air chamber; 11. Air hose; 12. First spur gear; 13. First spur rack; 14. Arc block; 15. Conical groove; 16. Slide rod; 17. Fixing block; 18. First piston rod; 19. Cylindrical frame; 20. Elastic plate; 21. Screw; 22. Rectangular block; 23. U-shaped frame; 24. Rectangular plate; 25. Connecting seat; 26. Worm gear; 27. Worm; 28. Limiting rod; 29. ​​First 30. Lead screw; 31. Second air chamber; 32. Second piston rod; 33. Second spur gear; 34. Ratchet; 35. Ratchet tooth; 36. Fixing bracket; 37. First calibration block; 38. Auxiliary spur gear; 39. Third spur gear; 40. Third spur gear; 41. Rectangular groove; 42. Second lead screw; 43. Fixed column rod; 44. Torsion spring; 45. Trapezoidal slide; 46. Moving block; 47. Trapezoidal slider; 48. Connecting slide; 49. Second calibration block; 50. First connecting block; 51. Second connecting block; 52. Fixed slider; 53. Auxiliary seat.

[0036] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0038] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0039] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0040] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0041] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0042] like Figures 1 to 12 As shown, this embodiment of the invention provides a clinical ankle joint prosthesis surgery navigator, comprising: a navigator 1, a slide rod 16 slidably connected to the inner side of the navigator 1, Kirschner screws 2 disposed at both ends of the navigator 1, a fixing seat 8 fixedly connected to the outer wall of the Kirschner screw 2 by a bolt assembly, an arc-shaped block 14 installed at the end of the slide rod 16, a rectangular frame 9 disposed at the top of the arc-shaped block 14, a fixing block 17 fixedly connected to one end of the rectangular frame 9, one Kirschner screw 2 fixedly connected to the inner side of the fixing block 17 by a bolt assembly, and the fixing block 17 overlapping above one of the fixing seats 8, a rotating block 6 rotatably connected to the other end of the navigator 1, the rotating block 6 fixedly connected to another Kirschner screw 2 by a bolt assembly, and the rotating block 6 disposed above the other fixing seat 8.

[0043] A fixing mechanism, located on one side of the navigator 1, is used to fix the angle between the navigator 1 and the leg bone. The fixing mechanism includes a rotating rod 3 rotatably connected to one side of the navigator 1, a calibrator 4 fixedly connected to one side of the rotating rod 3, a second spur gear 33 fixedly connected to the outer wall of the rotating rod 3, a second air chamber 30 fixedly connected to one side of the navigator 1, a second piston rod 31 slidably connected inside the second air chamber 30, one end of the second piston rod 31 penetrating to the outside of the second air chamber 30 and fixedly connected to a second spur rack 32 meshing with the second spur gear 33, and the fixing mechanism also includes a first air chamber 10 fixedly connected to the top of the rectangular frame 9, the air inlet end of the first air chamber 10 and the air outlet end of the second air chamber 30 connected by an air guide hose 11, a first piston rod 18 slidably connected inside the first air chamber 10, one end of the first piston rod 18 penetrating to the outside of the first air chamber 10 and fixedly connected to a first spur rack 13. The first spur rack 13 is meshed with a first spur gear 12 on one side. The bottom of the first spur gear 12 is fixedly connected to a screw 21. The top of the rectangular frame 9 is fixedly connected to an auxiliary seat 53. The screw 21 is rotatably connected to the inner side of the auxiliary seat 53. The outer wall of the screw 21 is threadedly connected to a cylindrical frame 19. The cylindrical frame 19 is slidably connected to the inside of the rectangular frame 9. The fixing mechanism also includes a conical groove 15 opened inside the arc block 14. The outer wall of the cylindrical frame 19 is fixedly connected to multiple elastic plates 20, and the end of each elastic plate 20 is in contact with the inside of the conical groove 15. The outer wall of the rotating rod 3 is provided with a limiting component for limiting the rotating rod 3. The limiting component includes a fixed column rod 43 fixedly connected to one side of the navigator 1. The outer wall of the fixed column rod 43 is rotatably connected to a ratchet 35. A torsion spring 44 is installed between the fixed column rod 43 and the ratchet 35. The outer wall of the rotating rod 3 is fixedly connected to a ratchet 34 that meshes with the ratchet 35.

[0044] First, the staff fixes the mounting base 8 to the Kirschner screws 2 using bolt assemblies. Then, they fix both ends of the navigator 1 to the Kirschner screws 2. With the assistance of X-ray equipment, the staff manually pulls the arc-shaped block 14. The greater the angle of movement of the arc-shaped block 14, the greater the friction between the elastic plate 20 and the conical groove 15, resulting in greater resistance when the arc-shaped block 14 moves. This allows the staff to gradually and slowly make manual adjustments. Since existing adjustments involve the arc-shaped block 14 sliding along the outside of the cylindrical frame 19, and the relationship between the arc-shaped block 14 and the cylindrical frame 19 is smooth, this solution uses the structure of the elastic plate 20 and the conical groove 15 to gradually increase the resistance as the arc-shaped block 14 rotates from the center position to the side, thereby improving the stability during the adjustment process. This allows for precise adjustment of the swing angle of the navigator 1, thus improving the efficiency of ankle joint surgery.

[0045] When the staff adjusts the calibrator 4 according to the angle of the patient's bone line, the staff will rotate the rotating rod 3. At this time, the rotating rod 3 drives the ratchet 34 to rotate. After the angle between the calibrator 4 and the patient's bone line is calibrated, the ratchet 35 engages with the ratchet 34 under the action of the torsion spring 44, and limits the rotating rod 3, so that the calibrator 4 can be self-locked, thereby improving the stability of the calibrator 4 when rotating. After the angle of the calibrator 4 is calibrated, the staff rotates the calibrator 4 and places the calibrator 4 on top of the navigator 1. At the same time as the calibrator 4 rotates, the rotating rod 3 drives the second spur gear 33 to rotate, thereby driving the second spur rack 32 to drive the second piston rod 31 to move inside the second air chamber 30. At this time, the second air chamber 30 pushes air from the air outlet of the second air chamber 30 into the air guide hose 11, and then from the air guide hose... The tube 11 enters the first air chamber 10 and pushes the first piston rod 18 to move inside the first air chamber 10, thereby driving the first spur rack 13 to drive the first spur gear 12 to rotate, and driving the screw 21 to rotate on the auxiliary seat 53, thereby driving the cylindrical frame 19 to move towards the bottom of the conical groove 15, so that the bottom of the cylindrical frame 19 is tightened with the conical groove 15. The friction generated between the cylindrical frame 19 and the bottom of the conical groove 15 fixes the navigator 1, preventing the angle of the navigator 1 from changing during surgery, thereby improving the stability of the navigator 1. When the navigator 1 needs to be calibrated again, simply rotate the ratchet 35 to separate the ratchet 35 from the ratchet wheel 34, and then rotate the calibrator 4 to reset it. Thus, the above structure can be used to quickly calibrate and reset the navigator 1, shorten the surgical preparation time, and improve the overall surgical efficiency.

[0046] like Figures 1 to 12 As shown, the adjustment unit, located at the top of the navigator 1, is used to align the ankle resection mold with the patient's ankle joint. The adjustment unit includes a rectangular block 22 fixedly connected to the top of the navigator 1. A U-shaped frame 23 is provided on the top of the rectangular block 22. Rectangular plates 24 are provided on both sides of the U-shaped frame 23. Two connecting seats 25 are fixedly connected to one side of the rectangular plate 24. A worm gear 27 is rotatably connected to the inner side of the connecting seat 25. A first lead screw 29 is rotatably connected to the inside of the rectangular plate 24. One end of the first lead screw 29 extends through to the outside of the rectangular plate 24 and is fixedly connected to a worm wheel 26 that meshes with the worm gear 27. The other end of the first lead screw 29 is rotatably connected to the side wall of the U-shaped frame 23. A fixing frame 36 is threadedly connected to the outer wall of the first lead screw 29. The rectangular plate 24 is fixedly connected to the U-shaped frame 23 through a limiting rod 28, and the fixing frame 36 is slidably connected to the outer wall of the limiting rod 28.

[0047] The adjustment unit also includes a first calibration block 37 and a second calibration block 49 that are fixedly connected to the inner sides of the two fixed frames 36 respectively. The inner sides of the first calibration block 37 and the second calibration block 49 are provided with a second connecting block 51 and a first connecting block 50. The inner side of the first calibration block 37 is fixedly connected with a plurality of connecting slides 48. The inner sides of the first calibration block 37 and the second connecting block 51 are respectively fixedly connected with a plurality of connecting slides 48. The inner sides of the second calibration block 49 and the first connecting block 50 are respectively provided with sliding grooves that match the connecting slides 48. The connecting slides 48 are slidably connected to the second calibration block 49 and the first connecting block 50 through the sliding grooves.

[0048] The adjustment unit also includes two sets of fixed sliders 52 disposed on the top of the first calibration block 37 and the second calibration block 49. Each set of fixed sliders 52 has two sliders, one horizontally and the other vertically. One set of fixed sliders 52 is slidably connected at both ends to the first calibration block 37 and the second connecting block 51, respectively. The other set of fixed sliders 52 is slidably connected at both ends to the second calibration block 49 and the first connecting block 50, respectively. Two rectangular sliders 5 are fixedly connected to the bottom of each fixed slider 52. The first calibration block 37, the second connecting block 51, the second calibration block 49, and the first connecting block 50 are all provided with rectangular grooves 41 that match the rectangular sliders 5. The fixed sliders 52 are slidably connected to the rectangular grooves 41 through the rectangular sliders 5. An auxiliary spring 7 is installed between the rectangular sliders 5 and the rectangular grooves 41. A driving component for pushing the U-shaped frame 23 to move is provided on the outer wall of one side of the navigator 1. The driving component includes a third spur gear 39 disposed on one side of the navigator 1. One end of the rotating rod 3 passes through to one side of the navigator 1 and is rotatably connected to the navigator 1. The rotating rod 3 is connected to the first spur gear 23. Three spur gears 39 are fixedly connected. An auxiliary spur gear 38 meshes with the top of the third spur gear 39, and the auxiliary spur gear 38 is rotatably connected to the rectangular block 22 via a rotating shaft. A third spur rack 40 meshes with the top of the auxiliary spur gear 38. Trapezoidal slides 45 are fixedly connected to both sides of the third spur rack 40. An auxiliary block is fixedly connected to one end of the trapezoidal slide 45. An auxiliary groove matching the auxiliary block is opened on one side of the rectangular block 22. The trapezoidal slide 45 is slidably connected to the auxiliary block and the auxiliary groove. The driving component also includes a moving part disposed inside the rectangular block 22. The top of the movable block 46 is fixedly connected to a trapezoidal slider 47. The rectangular block 22 has a trapezoidal groove inside that matches the trapezoidal slider 47. The movable block 46 is slidably connected to the trapezoidal groove through the trapezoidal slider 47. The inside of the movable block 46 is rotatably connected to a second lead screw 42. The two ends of the second lead screw 42 pass through the outside of the U-shaped frame 23 and are threadedly connected to the U-shaped frame 23. The bottom of the U-shaped frame 23 is fixedly connected to a limiting block that matches the trapezoidal slide 45. The U-shaped frame 23 is slidably connected to the trapezoidal slide 45 through the limiting block.

[0049] The distance between the first calibration block 37 and the second calibration block 49 is the length of the ankle joint to be removed. There are drilling slots and cutting slots between the first calibration block 37, the second calibration block 49 and the first connecting block 50 and the second connecting block 51. When the calibrator 4 rotates, the rotating rod 3 drives the third spur gear 39 to rotate, thereby driving the auxiliary spur gear 38 to rotate. The auxiliary spur gear 38 drives the third spur rack 40 to move on one side of the rectangular block 22. The third spur rack 40 slides on the rectangular block 22 through the trapezoidal slide 45 and drives the U-shaped frame 23 to move to the position after the calibrator 4 has been calibrated. During the rotation of the calibrator 4, because the distance between the calibrator 4 and the U-shaped frame 23 is large enough, the calibrator 4 and the U-shaped frame 23 will not obstruct each other when they move. When the calibrator 4 is placed on the navigator 1, the U-shaped frame 23 drives the first calibration block 37 and the second calibration block 49 to the position of the calibrator 4, so that the drilling slots and cutting slots are adjusted to align with the part to be cut, so that the subsequent cutting operation can be performed by the staff.

[0050] Before the surgery, the staff 3D printed the patient's ankle joint. Then, based on the size of the patient's ankle joint, the staff turned the worm gear 27. The worm gear 27 drove the worm wheel 26 to rotate, which in turn drove the first lead screw 29 to rotate, thereby driving the fixation frame 36 to move outward. The fixation frame 36 caused the connecting slide 48 on the first calibration block 37 and the second connecting block 51 to slide in the sliding groove inside the second calibration block 49 and the first connecting block 50, increasing the distance between the first calibration block 37 and the second calibration block 49 to match the length of the patient's ankle joint resection. This ensured that the size between the first calibration block 37 and the second calibration block 49 corresponded to the size of the patient's ankle joint resection location. Based on the 3D-printed model of the patient's ankle joint, the doctor can adjust the spacing between the first calibration block 37 and the second calibration block 49 to ensure that it matches the actual resection requirements. Then, when the first calibration block 37 and the second calibration block 49 move to the designated position, the operator turns the second lead screw 42 to drive the U-shaped frame 23 to slide on the trapezoidal slide 45, thereby matching the position of the first calibration block 37 and the second calibration block 49 with the resection position of the patient's ankle joint. By adjusting the first calibration block 37 and the second calibration block 49, the doctor can find the accurate resection position more quickly during the operation, thereby improving the accuracy of the ankle joint resection position and speeding up the surgical process.

[0051] After the staff calibrates the first calibration block 37 and the second calibration block 49 with the cutting position of the patient's ankle joint, the staff takes out the drill bit, aligns it with the drilling groove, and drills a hole in the patient's ankle joint. Then, the staff uses a cutting blade to cut along the cutting groove between the first calibration block 37, the second calibration block 49, the first connecting block 50, and the second connecting block 51. When the cutting blade moves to one side of the fixed slider 52, the cutting blade can be pushed further. At this time, the cutting blade pushes one of the fixed sliders 52 to move inside the rectangular groove 41. When the fixed slider 52 moves to its maximum limit, the staff stops moving the cutting blade. Then, the staff lifts the cutting blade, and the fixed slider 52 returns to its original position under the action of the auxiliary spring 7. After repositioning, the staff continues to cut the patient's ankle joint along the cutting area from when it was lifted. This process is repeated until the patient's ankle joint is completely cut. During the operation, the staff can make real-time adjustments based on the actual condition of the patient's ankle joint to ensure the accuracy of the cutting length and position. After the ankle joint cutting surgery is completed, the bolt assembly that holds the navigator 1 in place on the Kirschner screw 2 is loosened, and then the navigator 1 is removed to continue the follow-up finishing work. The staff can quickly adjust and fix the navigator 1, calibrator 4, and cutting device to the required positions, thereby speeding up the surgical process.

[0052] The workflow of the technical solution provided by this invention is as follows:

[0053] First, the staff fixes the fixing base 8 to the Kirschner screw 2 with bolt assembly. Then, the two ends of the navigator 1 are fixed to the Kirschner screw 2. With the assistance of X-ray equipment, the arc block 14 is pulled by hand. The greater the angle of movement of the arc block 14, the greater the friction between the elastic plate 20 and the conical groove 15, which makes the resistance when the arc block 14 moves greater. This allows for precise adjustment of the swing angle of the navigator 1. Through friction control and component linkage, the position of the navigator 1 can be precisely controlled, thereby aligning the calibrator 4 with the surgical position of the ankle joint and improving the efficiency of ankle joint surgery.

[0054] When the staff adjusts the calibrator 4 according to the angle of the patient's bone line, the staff will rotate the rotating rod 3. At this time, the rotating rod 3 drives the ratchet 34 to rotate. After the angle between the calibrator 4 and the patient's bone line is calibrated, the ratchet 35 engages with the ratchet 34 under the action of the torsion spring 44, and limits the rotating rod 3, so that the calibrator 4 can be self-locked, thereby improving the stability of the calibrator 4 when rotating. After the angle of the calibrator 4 is calibrated, the staff rotates the calibrator 4 and places the calibrator 4 on top of the navigator 1. At the same time as the calibrator 4 rotates, the rotating rod 3 drives the second spur gear 33 to rotate, thereby driving the second spur rack 32 to drive the second piston rod 31 to move inside the second air chamber 30. At this time, the second air chamber 30 pushes air from the air outlet of the second air chamber 30 into the air guide hose 11, and then from the air guide hose... The tube 11 enters the first air chamber 10 and pushes the first piston rod 18 to move inside the first air chamber 10, thereby driving the first spur rack 13 to drive the first spur gear 12 to rotate, and driving the screw 21 to rotate on the auxiliary seat 53, thereby driving the cylindrical frame 19 to move towards the bottom of the conical groove 15, so that the bottom of the cylindrical frame 19 is tightened with the conical groove 15. The friction generated between the cylindrical frame 19 and the bottom of the conical groove 15 fixes the navigator 1, preventing the angle of the navigator 1 from changing during surgery, thereby improving the stability of the navigator 1. When the navigator 1 needs to be calibrated again, simply rotate the ratchet 35 to separate the ratchet 35 from the ratchet wheel 34, and then rotate the calibrator 4 to reset it. Thus, the above structure can be used to quickly calibrate and reset the navigator 1, shorten the surgical preparation time, and improve the overall surgical efficiency.

[0055] The distance between the first calibration block 37 and the second calibration block 49 is the length of the patient's ankle joint to be removed. There are drilling grooves and cutting grooves between the first calibration block 37, the second calibration block 49 and the first connecting block 50 and the second connecting block 51. When the calibrator 4 rotates, the rotating rod 3 drives the third spur gear 39 to rotate, thereby driving the auxiliary spur gear 38 to rotate. The auxiliary spur gear 38 drives the third spur rack 40 to move on one side of the rectangular block 22. The third spur rack 40 slides on the rectangular block 22 through the trapezoidal slide 45 and drives the U-shaped frame 23 to move to the position after the calibrator 4 has been calibrated. During the rotation of the calibrator 4, because the distance between the calibrator 4 and the U-shaped frame 23 is large enough, the calibrator 4 and the U-shaped frame 23 will not obstruct each other when they move. When the calibrator 4 is placed on the navigator 1, the U-shaped frame 23 drives the first calibration block 37 and the second calibration block 49 to move to the position of the calibrator 4.

[0056] Before the surgery, the staff 3D printed the patient's ankle joint. Then, based on the size of the patient's ankle joint, the staff turned the worm gear 27. The worm gear 27 drove the worm wheel 26 to rotate, which in turn drove the first lead screw 29 to rotate, thereby driving the fixation frame 36 to move outward. The fixation frame 36 caused the connecting slide 48 on the first calibration block 37 and the second connecting block 51 to slide in the sliding groove inside the second calibration block 49 and the first connecting block 50, increasing the distance between the first calibration block 37 and the second calibration block 49 to match the length of the patient's ankle joint resection. This ensured that the size between the first calibration block 37 and the second calibration block 49 corresponded to the size of the patient's ankle joint resection location. Based on the 3D-printed model of the patient's ankle joint, the doctor can adjust the spacing between the first calibration block 37 and the second calibration block 49 to ensure that it matches the actual resection requirements. Then, when the first calibration block 37 and the second calibration block 49 move to the designated position, the operator turns the second lead screw 42 to drive the U-shaped frame 23 to slide on the trapezoidal slide 45, thereby matching the position of the first calibration block 37 and the second calibration block 49 with the resection position of the patient's ankle joint. By adjusting the first calibration block 37 and the second calibration block 49, the doctor can find the accurate resection position more quickly during the operation, thereby improving the accuracy of the ankle joint resection position and speeding up the surgical process.

[0057] After the staff calibrates the first calibration block 37 and the second calibration block 49 with the cutting position of the patient's ankle joint, the staff takes out the drill bit, aligns it with the drilling groove, and drills a hole in the patient's ankle joint. Then, the staff uses a cutting blade to cut along the cutting groove between the first calibration block 37, the second calibration block 49, the first connecting block 50, and the second connecting block 51. When the cutting blade moves to one side of the fixed slider 52, the cutting blade can be pushed further. At this time, the cutting blade pushes one of the fixed sliders 52 to move inside the rectangular groove 41. When the fixed slider 52 moves to its maximum limit, the staff stops moving the cutting blade. Then, the staff lifts the cutting blade, and the fixed slider 52 returns to its original position under the action of the auxiliary spring 7. After repositioning, the staff continues to cut the patient's ankle joint along the cutting area from when it was lifted. This process is repeated until the patient's ankle joint is completely cut. During the operation, the staff can make real-time adjustments based on the actual condition of the patient's ankle joint to ensure the accuracy of the cutting length and position. After the ankle joint cutting surgery is completed, the bolt assembly that holds the navigator 1 in place on the Kirschner screw 2 is loosened, and then the navigator 1 is removed to continue the follow-up finishing work. The staff can quickly adjust and fix the navigator 1, calibrator 4, and cutting device to the required positions, thereby speeding up the surgical process.

[0058] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A clinical ankle joint prosthesis surgery navigator, characterized in that, include: A navigator has a sliding rod slidably connected to its inner side, and Kirschner screws are provided at both ends of the navigator. The outer wall of the Kirschner screws is fixedly connected to a fixing seat by a bolt assembly. An arc-shaped block is installed at the end of the sliding rod, and a rectangular frame is provided above the arc-shaped block. A fixing block is fixedly connected to one end of the rectangular frame. One of the Kirschner screws is fixedly connected to the inner side of the fixing block by a bolt assembly, and the fixing block is positioned above one of the fixing seats. A rotating block is rotatably connected to the other end of the navigator. The rotating block is connected to another Kirschner screw by a bolt assembly, and the rotating block is positioned above another fixing seat. A fixing mechanism, located on one side of the navigator, is used to fix the angle between the navigator and the leg bone; An adjustment unit, located on top of the navigator, is used to align the ankle resection mold with the patient's ankle joint. The fixing mechanism includes a rotating rod rotatably connected to one side of the navigator, a calibrator fixedly connected to one side of the rotating rod, a second spur gear fixedly connected to the outer wall of the rotating rod, a second air chamber fixedly connected to one side of the navigator, a second piston rod slidably connected inside the second air chamber, and a second spur rack that meshes with the second spur gear is fixedly connected to one end of the second piston rod through to the outside of the second air chamber. The fixing mechanism further includes a first air chamber fixedly connected to the top of the rectangular frame. The air inlet of the first air chamber and the air outlet of the second air chamber are connected by an air guide hose. A first piston rod is slidably connected inside the first air chamber. One end of the first piston rod extends through to the outside of the first air chamber and is fixedly connected to a first spur rack. A first spur gear meshes with one side of the first spur rack. A screw is fixedly connected to the bottom of the first spur gear. An auxiliary seat is fixedly connected to the top of the rectangular frame. The screw is rotatably connected to the inner side of the auxiliary seat. A cylindrical frame is threadedly connected to the outer wall of the screw. The cylindrical frame is slidably connected inside the rectangular frame. The fixing mechanism also includes a conical groove formed inside the arc-shaped block, and a plurality of elastic plates are fixedly connected to the outer wall of the cylindrical frame, with the end of each elastic plate fitting into the interior of the conical groove. The outer wall of the rotating rod is provided with a limiting component for limiting the rotating rod. The limiting component includes a fixed column fixedly connected to one side of the navigator, a ratchet tooth rotatably connected to the outer wall of the fixed column, a torsion spring installed between the fixed column and the ratchet tooth, and a ratchet wheel meshing with the ratchet tooth fixedly connected to the outer wall of the rotating rod.

2. The clinical ankle joint prosthesis surgery navigator according to claim 1, characterized in that: The adjustment unit includes a rectangular block fixedly connected to the top of the navigator. A U-shaped frame is provided on the top of the rectangular block, and rectangular plates are provided on both sides of the U-shaped frame. Two connecting seats are fixedly connected to one side of the rectangular plates. A worm gear is rotatably connected to the inner side of the connecting seats. A first lead screw is rotatably connected to the inside of the rectangular plates. One end of the first lead screw passes through the outside of the rectangular plates and is fixedly connected to a worm wheel that meshes with the worm gear. The other end of the first lead screw is rotatably connected to the side wall of the U-shaped frame. A fixing frame is threadedly connected to the outer wall of the first lead screw. The rectangular plates are fixedly connected to the U-shaped frame through a limiting rod, and the fixing frame is slidably connected to the outer wall of the limiting rod.

3. The clinical ankle joint prosthesis surgery navigator according to claim 2, characterized in that: The adjustment unit further includes a first calibration block and a second calibration block fixedly connected to the inner sides of the two fixed frames respectively. The inner sides of the first calibration block and the second calibration block are provided with a second connecting block and a first connecting block. The inner side of the first calibration block is fixedly connected with a plurality of connecting slides. The inner sides of the first calibration block and the second connecting block are respectively fixedly connected with a plurality of connecting slides. The inner sides of the second calibration block and the first connecting block are respectively provided with sliding grooves that match the connecting slides. The connecting slides are slidably connected to the second calibration block and the first connecting block through the sliding grooves.

4. The clinical ankle joint prosthesis surgery navigator according to claim 3, characterized in that: The adjustment unit further includes two sets of fixed sliders disposed on the top of the first calibration block and the second calibration block. Each set of fixed sliders has two sliders, one horizontally and the other vertically. One set of fixed sliders is slidably connected to the first calibration block and the second connecting block at both ends, and the other set of fixed sliders is slidably connected to the second calibration block and the first connecting block at both ends. Two rectangular sliders are fixedly connected to the bottom of each fixed slider. The first calibration block, the second connecting block, and the first connecting block are all provided with rectangular slots that match the rectangular sliders. The fixed sliders are slidably connected to the rectangular slots through the rectangular sliders, and an auxiliary spring is installed between the rectangular sliders and the rectangular slots. A drive component for moving the U-shaped frame is provided on one side of the outer wall of the navigator.

5. The clinical ankle joint prosthesis surgery navigator according to claim 4, characterized in that: The driving component includes a third spur gear disposed on one side of the navigator. One end of the rotating rod extends through to one side of the navigator and is rotatably connected to the navigator. The rotating rod is fixedly connected to the third spur gear. An auxiliary spur gear meshes with the top of the third spur gear. The auxiliary spur gear is rotatably connected to the rectangular block via a rotating shaft. A third spur rack meshes with the top of the auxiliary spur gear. Trapezoidal slides are fixedly connected to both sides of the third spur rack. An auxiliary block is fixedly connected to one end of the trapezoidal slide. An auxiliary groove matching the auxiliary block is opened on one side of the rectangular block. The trapezoidal slide is slidably connected to the auxiliary groove via the auxiliary block.

6. The clinical ankle joint prosthesis surgery navigator according to claim 5, characterized in that: The driving component also includes a movable block disposed inside the rectangular block. A trapezoidal slider is fixedly connected to the top of the movable block. A trapezoidal groove matching the trapezoidal slider is opened inside the rectangular block. The movable block is slidably connected to the trapezoidal groove through the trapezoidal slider. A second lead screw is rotatably connected inside the movable block. The two ends of the second lead screw pass through the outside of the U-shaped frame and are threadedly connected to the U-shaped frame. A limiting block matching the trapezoidal slide is fixedly connected to the bottom of the U-shaped frame. The U-shaped frame is slidably connected to the trapezoidal slide through the limiting block.

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